THERE are signs the Art Basel convention in Miami, which attracts hordes of celebrities with no actual interest in art, has jumped the shark. As socialite Helen Lee Schifter observed yesterday in a postcard sent to WWD, the convention is filled with “jaded johns and art tarts who mock the whole experience” as well as “lime green polyester, bulging fanny packs [and] Tevas [sandals and flip-flops], just like Disney World.” Among the noncollectors was Yankee Alex Rodriguez, who left his pregnant wife, Cynthia, home to party with Owen Wilson and Woody Harrelson. The next day, the couple went to Nobu and “had a two-hour dinner and didn’t say a word to each other,” our spy said. “Not one word. It was weird.” Sugar baron Pepe and Emilia Fanjul showed up together to Paul Wilmot‘s party at Wilmot’s Miami Shores home, showing their marriage was as strong as ever. Also at the party were Calvin Klein and Sandy Gallin.